Birty Dastards Jeep Club

Tech Forum => Workshop => Topic started by: doody202 on July 08, 2009, 10:12:35 AM

Title: ZJ Viscous coupler!!
Post by: doody202 on July 08, 2009, 10:12:35 AM
Hi guys, i have a 1997 grand cherokee limited 4.0 petrol, after a run of say 10 miles i get hard juddering when parking up and it will not pull away under its own steam with foot off the brake from stanstill, just been serviced brakes are fine, so i routed around and have come to the coclusion its the VC.
Jeep want £733 just to supply it!! Ebay jeep guy wants £400 but have found a place in the US for £280 brand new crown automotive unit....is this about the lowest i can expect to pay??
Title: Re: ZJ Viscous coupler!!
Post by: daggie on July 08, 2009, 06:28:27 PM
take the front prop off to check it, put a 2nd hand transfer case in it
Title: Re: ZJ Viscous coupler!!
Post by: doody202 on July 10, 2009, 05:13:29 PM
Found a place in Hereford called rocknuts, they do transfer cases for £150 is it worth a punt? what should i look out for when going to see what they have?
Title: Re: ZJ Viscous coupler!!
Post by: daggie on July 10, 2009, 05:31:33 PM
stuff is tested
Title: Re: ZJ Viscous coupler!!
Post by: Bubba on July 10, 2009, 07:56:11 PM
if the price fits the pocket and its tested i dont see a problem as long as there is somkind of replacement waranty obviously you cant expect much of a waranty as its going to be second hand parts but a good trading experiance is good for you and good for them too  [word of mouth]
Title: Re: ZJ Viscous coupler!!
Post by: doody202 on August 08, 2009, 04:40:10 PM
Gonna import a new VC but in meantime can it be driven normally with front prop removed? i know i will lose offroad ability but its just for work and needs to stay on the road... its a 249 case.. some guy i spoke to today is an ex chrysler technician and basically told me that it would be fine..... though i got the feeling he worked for them about 100 years ago lol... anyone done this before?
Title: Re: ZJ Viscous coupler!!
Post by: haslamg on August 09, 2009, 10:05:36 AM
Yup.  Drove around in my 1997 ZG for months like that.

Make sure your handbrake works ok because you'll lose the Park functionality on the transmission.

If you're not doing the work yourself, it would be so much cheaper to have either a NP231 or 242 case swapped in off a Cherokee. imo at least.

G.
Title: Re: ZJ Viscous coupler!!
Post by: doody202 on August 09, 2009, 10:50:01 AM
Thanks for that :icon_super:  would the other cases be a near enough straight swop?
Title: Re: ZJ Viscous coupler!!
Post by: daggie on August 09, 2009, 04:46:19 PM
np242 should be a straight swop, as long it is from the same year, male slip yoke, or female yoke :icon_winkle:
Title: Re: ZJ Viscous coupler!!
Post by: Panic mechanic! on August 09, 2009, 06:46:25 PM
I got a 242 sitting on the back of a engine I am going to transfer to a yj if you are interested in it at all , let me know here cos I am not recieving pm's via birty's.
Title: Re: ZJ Viscous coupler!!
Post by: doody202 on August 10, 2009, 08:57:03 AM
Sounds perfect! How far are you from Kidderminster?... are there any mods to be taken into account to put the 242 on mine?
Title: Re: ZJ Viscous coupler!!
Post by: Bubba on August 10, 2009, 06:13:51 PM
he is close to the old longbridge car plant
Title: Re: ZJ Viscous coupler!!
Post by: doody202 on August 10, 2009, 07:52:17 PM
Thanks V8! Thats only Rubery way so about half an hour... just gotta confirm its a 1997 and im sorted, thanks again :icon_winkle:
Title: Re: ZJ Viscous coupler!!
Post by: doody202 on August 10, 2009, 07:55:56 PM
np242 should be a straight swop, as long it is from the same year, male slip yoke, or female yoke :icon_winkle:
Thanks daggie, so as long as the input shafts are same it will go straight on, then all i need to do is swop over the connectors behind the radio and get a different console plate for the new functions
Title: Re: ZJ Viscous coupler!!
Post by: Panic mechanic! on August 10, 2009, 08:05:05 PM
your welcome to pop over and take a look, and yes I am not far from the Rubery flyover, I'll pm you my number
Title: Re: ZJ Viscous coupler!!
Post by: doody202 on August 10, 2009, 08:11:24 PM
Thats great thankyou, the front prop will be off in the morning so should be able to drive it to Rubery will call you later once ive got the number
Title: Re: ZJ Viscous coupler!!
Post by: Panic mechanic! on August 10, 2009, 08:13:47 PM
pm sent
Title: Re: ZJ Viscous coupler!!
Post by: doody202 on August 10, 2009, 09:01:34 PM
got it thanks
Title: Re: ZJ Viscous coupler!!
Post by: daggie on August 10, 2009, 09:50:53 PM
np242 should be a straight swop, as long it is from the same year, male slip yoke, or female yoke :icon_winkle:
Thanks daggie, so as long as the input shafts are same it will go straight on, then all i need to do is swop over the connectors behind the radio and get a different console plate for the new functions

Consol plate could be a problem, only zjs in the usa had 242s
no other stuff is needed, the switches on the new box must have the same shape electrical plugs :icon_winkle:
Title: Re: ZJ Viscous coupler!!
Post by: doody202 on August 11, 2009, 01:57:56 PM
Front prop now off and it drives great! steering is lighter and parking without juddering woohoo!!